<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">This is reliably reproducible running x86_64 CCL under Rosetta2:<div class=""><br class=""></div><div class=""><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">ron@RMBA1 ~ % ~/devel/ccl/dx86cl64</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">Clozure Common Lisp Version 1.12.1 (v1.12.1-10-gca107b94) DarwinX8664</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">? (finalize-inheritance (find-class 'standard-class))</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">rosetta error: unexpectedly need to EmulateForward on a synchronous exception x86_rip=0x52776560442047 arm_pc=0x4303779228 num_insts=3 inst_index=2 x86 instruction bytes: 0x10036366705108273237 0x85581580638679157</span></div><div style="margin: 0px; font-stretch: normal; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">zsh: trace trap ~/devel/ccl/dx86cl64</span></div></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div><div class="">This call never crashes on a real x86, but crashes 100% of the time under Rosetta2. AFAIK this is the first reliably reproducible discrepancy between the behavior of Rosetta2 and a real x86.</div><div class=""><br class=""></div><div class="">rg</div><div class=""><br class=""></div></body></html>